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The main factors affecting the soil-structure interface behaviors were found experimentally and theoretically, including: 1 the thickness of the interface that is five to six times the average grain size of the soil; 2 the aeolotropy of interface, which is responsible for anisotropic response of the stress-strain response of the interface; 3 two physical states, including crashing and compression of the soil near the structure surface, which govern the stress-strain response of the interface strongly; 4 two shear deformation components due to sliding and constraint of the structure surface relative to the soil respectively, which forms the deformation of the interface; 5 the volumetric strain due to dilatancy, which is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. 4. A unified constitutive model of the interface, based on new elasto-plasticity damage theory, was developed. It was confirmed to be effective for the conditions considering monotonic and cyclic shearing, coupling effect of shear and volumetric strains, evolution of physical state, micro-structure aeolotropy of the soil and the resulting aeolotropy of the interface as well as the three normal boundary conditions stated above. 5. 2D and 3D finite element formulations of the present model were derived and incorporated into the FEM codes. They were applied to the evaluation of practical engineering problems with different typical interfaces between soil and structure. The new model was shown to be reasonable and effective.

确定了粗粒土与结构接触面厚度约为5~6倍的平均粒径,首次揭示了接触面的细观结构异向性以及由此所引起的宏观剪切异向性,发现了在单调和往返剪切荷载作用下土颗粒破碎和剪切压密两种物态变化机制共同支配着接触面力学性质的变化,通过细观分析证实了接触面的变形可分解为一般同时发生的土与结构交界面上的滑移变形以及结构面位移约束范围之内土体本身的剪切变形两部分,观测到接触面受剪时表现出明显的相对法向位移,并可分解为可逆性和不可逆性两个分量;(4)建立了第一个能够统一地描述单调与往返剪切特性、剪应变与体应变耦合特性、细观结构和宏观剪切异向性以及土颗粒破碎等物态变化特性的土与结构接触面弹塑性损伤本构数学模型,并采用多种法向边界条件复杂加载路径的试验成果验证了新模型的合理性和有效性;(5)提出了新模型的二、三维有限元格式并结合实际边值问题进行了应用计算分析,比较了不同接触面本构模型对计算结果的影响,证实了新模型及其有限元格式不仅能够合理地描述土与结构接触面的主要力学特性,还能够较好地反映土体与结构物在接触面处的滑移、脱开等不连续现象。

The efficiency of surfactant was evaluatedby measurement of the polymerization kinetics, the conversion of MMA, the amount of thecoagulation, the surface tensteon of the miniemulsion before and after polymerization, andthe particle size and particle size distribution of obtained lattice.

通过对聚合反应的动力学,单体MMA的转化率,凝结物的生成量,细乳液聚合前后的表面张力,及所得乳胶粒子的粒径和粒径分布的表征,评价了大分子乳化剂在RAFT细乳液聚合中的效率。

Nanometer pearl powder creates the fourth times of pearl cosmetic----nanometer times. We select carefully limnetic pearl with high quality, adopt advanced super-sonic airstream physical manufacturing technic. Through super-sophisticated machine, we produce nanometer pearl powder with average diameterof 40-100 nanometer ( 1 millimeter = 1000000000 nanometer), equivalent to one hundredth of human body's pore, that is to say, by nanometer technic, we can powder one bead of pearl with 8 millimeter diameter into 64 trillion pieces, which means, everyone on the earth can have more than 10 thousand pieces.

纳米珍珠粉开创珍珠美容第四时代—纳米时代,我们精选优质淡水珍珠,采用先进的超音速气流物理粉碎技术,通过超精密设备生产出的平均粒径在40-100纳米( 1 毫米= 1000000000纳米)左右的纳米级珍珠粉,细度只有人体毛孔的1/100,也就是是说将一颗直径8毫米的珍珠通过纳米技术粉碎等分,可粉碎为64万亿粒,相当于每个地球人都可以拿到1万多粒。

The Shaoxing Tongyi needle spins limited company Two-sided velvet、 Swings the grain of fabric Double brushes Shan Yao Cuts 、 Coral fabric、 Side package、serging Border closing、overhand Stretches the seam、flatseam Above textile patterns and outside material are part of bills which produced by the company recently, if you have any quesqion, please touch me by telephone or E-mail .

主要产品有各种规格的单双面绒、羊羔绒、摇粒绒、剪毛绒、毛巾布、毛圈布、地裂布、珊瑚绒、超柔绒、印花摇粒绒、印花单双面绒、纸印花、抽条绒布和1-7#麻灰摇粒绒布及高F超细摇粒绒等各类高中档针织绒布。还可跟据客户要求,设计订做各类成品。以上是本公司最近走的单子中的一部分花型和面料,如有不清楚之处请来电或E-mail咨询。谢谢合作!

Professional manufacture of polar fleece, polar fleece ultrafine, single face velvet, ant cloth, CVC towel cloth, CVC velvet with printing, such as plain knitted fabric, as well as the manufacture of various types of plain, printing knitted polar fleece, fleece blankets.

专业制造摇粒绒、超细摇粒绒、单面绒、蚂蚁布、CVC毛巾布、CVC天鹅绒等素色与印花针织布,以及制造各类素色、印花的针织摇粒绒、双面绒毯子。

There is dehydrogenization reaction during the combustion process leading to sample expansion, which is harmful to the reaction between W and C and unfavorable to the synthesis of uniphase C.

燃烧产物由两种粉末组成:粒径2-4μm,棱角较明显的粗粒度粉末和粒径≤1μm的细粒度粉末;随体系中W含量减少和预热温度的提高,产物粗粒度粉末增加,细粒度粉末减少。

Results: The optimal preparing process is: making Panax to be powder; extracting Rheum and Coptis respectively with ethanol; decocting Astragalus, Hirudo and Polyporus with water; then making all the extractions to be powder and mixing with Panax powder, then putting them into capsules. The content of Ginsenoside 〓 in one capsule should be not less than 0.235mg. Panax and Coptis are the main compositions that make Liuwei Tangshen Capsule reducing the blood sugar.

结果:确定最佳制备工艺为:人参粉碎成细粉,黄连、大黄分别用乙醇提取,黄芪、水蛭、猪苓三药用水共煎,各提取物干浸膏细粉与人参细粉混匀,装胶囊;有效成分含量的控制标准为:每粒胶囊中含人参皂苷〓不低于0.235mg;人参、黄连是六味糖肾胶囊发挥降糖作用的主要药味;六味糖肾胶囊中小檗碱在动物体内的分布和消除速度均较适中,但病理模型动物与正常动物相比吸收较差。

The mechanical properties of coal filled polymer composites The mechanical properties of coal/PP composites were investigated, and the effects of coal rank, particle size, surface modification of coupling and alkylation were discussed. The results show that the anthracite and bituminous coal all can be used as filler of plastic after pretreatment of part devolatilization and surface modification; The modulus of composites increase with the content of coal filler; The coupling agent is of no effect for reinforcing the coal/PP composites, except that there are new oxygenous function group forming on the surface in the process of pulverizing; The F-C alkylation reinforce coal (under 10μm)/PP composites obviously.

4煤填充高分子复合材料力学性能超细煤粉填充聚丙烯复合材料力学性能的研究结果表明,烟煤和无烟煤经过脱除部分挥发分的预处理后,都可用于与塑料共混制备复合材料;偶联剂改性对低变质程度烟煤/聚丙烯复合材料的力学性能基本不起改善作用,而对于经气流超细粉碎后的小粒径高变质程度烟煤及无烟煤则有一定的增强作用;烷基化改性在煤表面接枝了烷基,使平均粒径小于10μm的煤/聚丙烯复合材料拉伸屈服强度普遍提高,煤填充高分子复合材料可在较高含煤量情况下维持良好的力学性能。

The tidal wetland sediment appeared the tendency of changing small from sea to land and from bottom to top.

结果表明,潮间带沉积物呈自海向陆和自下向上变细的趋势,一般光滩沉积物粒径〉50μm,盐沼上部沉积物粒径〈25μm;沿岸方向上,茂密盐沼的沉积物较之稀疏盐沼细;盐沼中的流速和波高较之相邻光滩减少50%以上;植物粘附悬沙干重达

The biomass shredding system was finally achieved through many practices and improvements, including the primary shredder, the fine shredder and the cyclone dust collector used as collecting device. The results indicated that the particle size of the primary shredded biomass was about 10mm with the production of 200kg/h, and that of the fine was between 0.177 mm and 0.125mm on different working parameters with the highest production of 160kg/h.

最后通过实践探索出一套集生物质粗、细破碎和利用旋风除尘器作为收集装置为一体的破碎系统,其粗破碎产物长10mm左右,产率为200kg/h;在不同系统工作参数下,细破碎产物粒径在0.177mm(80目)~0.125mm(120目)间可调,粒径为0.177mm时产率为160kg/h。

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推荐网络例句

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

The shamrock is the symbol of Ireland and of St.

三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。